Re: [PATCH v6 1/4] dt-bindings: phy: Add support for QUSB2 phy

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 





On 04/04/2017 11:58 PM, Stephen Boyd wrote:
On 03/20, Vivek Gautam wrote:
diff --git a/Documentation/devicetree/bindings/phy/qcom-qusb2-phy.txt b/Documentation/devicetree/bindings/phy/qcom-qusb2-phy.txt
new file mode 100644
index 000000000000..a6d19acde9e0
--- /dev/null
+++ b/Documentation/devicetree/bindings/phy/qcom-qusb2-phy.txt
@@ -0,0 +1,45 @@
+Qualcomm QUSB2 phy controller
+=============================
+
+QUSB2 controller supports LS/FS/HS usb connectivity on Qualcomm chipsets.
+
+Required properties:
+ - compatible: compatible list, contains "qcom,msm8996-qusb2-phy".
+ - reg: offset and length of the PHY register set.
+ - #phy-cells: must be 0.
+
+ - clocks: a list of phandles and clock-specifier pairs,
+	   one for each entry in clock-names.
+ - clock-names: must be "cfg_ahb" for phy config clock,
+			"ref" for 19.2 MHz ref clk,
+			"iface" for phy interface clock (Optional).
+
+ - vdd-phy-supply: Phandle to a regulator supply to PHY core block.
+ - vdda-pll-supply: Phandle to 1.8V regulator supply to PHY refclk pll block.
+ - vdda-phy-dpdm-supply: Phandle to 3.1V regulator supply to Dp/Dm port signals.
+
+ - resets: Phandle to reset to phy block.
+
+Optional properties:
+ - nvmem-cells: Phandle to nvmem cell that contains 'HS Tx trim'
+		tuning parameter value for qusb2 phy.
+
+ - qcom,tcsr-syscon: Phandle to TCSR syscon register region.
+
+Example:
+	hsusb_phy: phy@7411000 {
+		compatible = "qcom,msm8996-qusb2-phy";
+		reg = <0x7411000 0x180>;
+		#phy-cells = <0>;
+
+		clocks = <&gcc GCC_USB_PHY_CFG_AHB2PHY_CLK>,
+			<&gcc GCC_RX1_USB2_CLKREF_CLK>,
+		clock-names = "cfg_ahb", "ref";
+
+		vdd-phy-supply = <&pm8994_s2>;
pm8994_s2 is a "corner" regulator. I'm not sure how we're going
to have it listed here as something like a regulator supply in
the binding. We probably should leave it out for now and let the
power domain + pm_qos stuff for corners work out. From what I see
in the downstream driver the code is setting the corner to '4'
when active, and '1' when inactive.

Sure, let's allow power domain and corner voltage work handle
this. I will drop this regulator entry from bindings, and the driver.


Best regards
Vivek

--
The Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
a Linux Foundation Collaborative Project

--
To unsubscribe from this list: send the line "unsubscribe linux-arm-msm" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html



[Index of Archives]     [Linux ARM Kernel]     [Linux ARM]     [Linux Omap]     [Fedora ARM]     [Linux for Sparc]     [IETF Annouce]     [Security]     [Bugtraq]     [Linux MIPS]     [ECOS]     [Asterisk Internet PBX]     [Linux API]

  Powered by Linux